›› 2007, Vol. 28 ›› Issue (S1): 595-598.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Slip surface ascertaining and stability analyzing of the countertendency shale slope

YIN Xi-jie, YAN E-chuan, SUN Zhao-lai   

  1. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
  • Received:2007-05-20 Online:2007-10-25 Published:2014-03-28

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Abstract: The slip surface, which has different grades, is the base of the slope stability analysis and the methods for ascertaining it are different with the different slope structures. For countertendency soft rock slope，it can not be ascertained from the distribution of discontinuities as usual. Combined with FLAC3D and limit equilibrium method, the stability of countertendency shale slope with block cutting by discontinuities failure model is analyzed. Based on the field investigation, the deformation and failure mechanism is studied, the different grades slip surfaces are obtained from the analysis of the strain, stress and their increment pictures from FLAC3D analysis and the factor of safety is computed respectively. The prevention schemes are decided with the considering of the sub slip surface and the prevention effect is analyzed by aiming at the dangerous area. The safety factors of two dangerous areas, which are computed by shear strength reduction, indicate that the stability of the slope after prevention is good. The method used in this paper can be used as a reference to analyzing the stability of countertendency soft rock slope. The consideration of sub slip surface in prevention design has some practical guiding values

Key words: slip surface, FLAC3D, limit equilibrium method, factor of safety, shear strength reduction

CLC Number: 

  • TU454
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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